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Rev. Rom de STOMATOLOGIE nr.1 - 2007.p65 - medica.ro

Rev. Rom de STOMATOLOGIE nr.1 - 2007.p65 - medica.ro

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REVISTA ROMÂNÅ DE <st<strong>ro</strong>ng>STOMATOLOGIE</st<strong>ro</strong>ng> – VOL. LIII, NR. 1, AN 2007<br />

ªef Lucr. Dr. Anna-Maria Pangica<br />

Facultatea <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> Medicinå Dentarå,<br />

Universitatea „Titu Maiorescu“, Bucure¿ti<br />

Rezumat<br />

Depistarea curburii radiculare în toate canalele<br />

reprezintå unul dintre cele mai importante principii<br />

ale tratamentului endodontic.<br />

Chiar ¿i canalele aparent drepte sunt în general<br />

curbate în treimea apicala.<br />

Multe rådåcini au, înså, curburi severe în multiple<br />

planuri.<br />

Foarte frecvent aceste curburi nu sunt evi<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>n-<br />

¡iate prin examene radiologice conven¡ionale.<br />

Acest lucru <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>terminå e<strong>ro</strong>ri în tratamentul endodontic.<br />

P<strong>ro</strong>bleme ce apar în tratamentul endodontic al<br />

canalelor curbe:<br />

1. pier<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>rea lungimii <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> lucru prin<br />

– apari¡ia unui dop <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>tritus <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>ntinar<br />

– în<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>pårtarea insuficientå a tavanului camerei<br />

pulpare<br />

– ruperea instrumentului în canal<br />

2. <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>via¡ii <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> la anatomia normalå a canalului:<br />

– zipping<br />

– stripper<br />

3. pregåtirea nea<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>cvatå a canalului prin:<br />

– instrumentarea excesivå dincolo <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> constric¡ia<br />

apicalå<br />

– tratarea excesivå a curburii interne a canalului<br />

– pregåtirea insuficientå a canalului.<br />

Pentru ca så nu aparå aceste p<strong>ro</strong>bleme este indicat<br />

så preparåm canalele curbe prin tehnici<br />

speciale, ¿i anume:<br />

1. tehnica <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> preparare ret<strong>ro</strong>gra<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> (telescopare<br />

regresivå) step-back;<br />

2. tehnica anticurburå;<br />

3. tehnica for¡elor balansate;<br />

4. tehnica for¡elor balansate dublu evazate.<br />

DIFFICULTIES DURING THERAPY OF<br />

CURVED CANALS<br />

Atena Tånåse, MD, Assist. P<strong>ro</strong>f.<br />

Valeriu Cherlea, MD, PhD<br />

Anna-Maria Pangica, MD, Assist. P<strong>ro</strong>f.<br />

Faculty of Dental Medicine,<br />

„Titu Maiorescu“ University, Bucharest<br />

Abstract<br />

Finding the radicular curve in all canals is one<br />

of the most important principles of the endodontic<br />

therapy.<br />

25<br />

Even the canals that seem to be straight are<br />

usually curved in the apical third.<br />

However, many <strong>ro</strong>ots have severe curves on<br />

multiple plans.<br />

Very frequently these curves are not observed<br />

by conventional radiological treatments.<br />

P<strong>ro</strong>blems that may appear during the<br />

endodontic therapy of a curved canal:<br />

1. the working length may be lost by:<br />

– appearance of a <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>ntrius <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>ntinar stopper;<br />

– insufficiently pushing off the upper si<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> of<br />

the pulpar <strong>ro</strong>om;<br />

– breaking the working instrument insi<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> the<br />

canal.<br />

2. <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>viations f<strong>ro</strong>m the regular anatomy of the<br />

canal:<br />

– zipping;<br />

– stripper.<br />

3. ina<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>quately preparing the canal by:<br />

– excessive instrumentation beyond the apical<br />

constriction;<br />

– excessive treatment of the canal’s internal<br />

curve;<br />

– insufficiently preparing the canal.<br />

To prevent these p<strong>ro</strong>blems f<strong>ro</strong>m appearing the<br />

curved canals should be prepared using special<br />

techniques such as:<br />

1. ret<strong>ro</strong>gra<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> step-back preparation technique<br />

(regressive telescoping);<br />

2. anticurve technique;<br />

3. the balancing forces technique;<br />

4. the double splayed balancing forces technique.<br />

UTILIZAREA UNUI DISPOZITIV<br />

INDIVIDUALIZAT PENTRU ÎNREGISTRAREA<br />

UNGHIULUI GOTIC ªI VERIFICAREA<br />

ÎNREGISTRÅRII RELAºIEI CENTRICE LA<br />

EDENTATUL TOTAL<br />

Asist. Univ. Dr. Ingrid Pintilie<br />

Facultatea <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> Medicinå Dentarå,<br />

Clinica <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> P<strong>ro</strong>teticå Dentarå,<br />

UMF „Ca<strong>ro</strong>l Davila“, Bucure¿ti<br />

P<strong>ro</strong>f. Univ. Dr. Emilian Hutu<br />

Catedra <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> P<strong>ro</strong>teticå Dentarå,<br />

Facultatea <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> Medicinå Dentarå,<br />

Universitatea „Titu Maiorescu“, Bucure¿ti<br />

Rezumat<br />

Determinarea corectå a rela¡iei centrice este<br />

esen¡ialå în p<strong>ro</strong>tezarea e<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>ntatului total. Existå<br />

totu¿i cazuri dificile, la care, chiar prin utilizarea

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